ADR special provision 640J
SP 640 letter J: "Special provision 640J" in the document for ADR tanks; marks UN 1790 hydrofluoric acid with > 60 % to ≤ 85 % HF.
Under special provision 640, different tank codes within one packing group follow from the column (2) characteristics, and ADR tank consignments must show "Special provision 640" with the column (6) letter — here 640J — in the transport document, unless the tank meets at least the most stringent requirements for the UN number and packing group. In Table A, 640J is on UN 1790 HYDROFLUORIC ACID, Class 8, packing group I, with a hydrogen fluoride content above 60 % and up to 85 %.
| Value | Applies when |
|---|---|
| 60 % hydrogen fluoride | content above this (Table A entry carrying 640J) |
| 85 % hydrogen fluoride | content not above this (Table A entry carrying 640J) |
| documents | "Special provision 640J" in the transport document, ADR tank carriage only, unless the tank meets the most stringent requirements. |
|---|
Note. 3.3.1 prints no separate text for the letter J; the concentration band is read from the UN 1790 Table A row (Volume I page 394).
Refers to: special provision 640; 3.2.
Carried by 1 Table A entry
Source: ADR 2025 (ECE/TRANS/352), Volume I, section 3.3.1, special provision 640 (letter J), page 649.
Paraphrase in FreightUtils' own words, not the official text. Not yet reviewed.
ADR 2027 amendments (accepted, applying from 1 January 2027) are not yet reflected on this page.